/*
 * Copyright (c) 1993, 1994, 1997
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Header: /tcpdump/master/libpcap/Win32/Include/ip6_misc.h,v 1.5 2006-01-22 18:02:18 gianluca Exp $ (LBL)
 */

/*
 * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows
 */

#include <winsock2.h>

#include <ws2tcpip.h>

#ifndef __MINGW32__
#define    IN_MULTICAST(a)        IN_CLASSD(a)
#endif

#define    IN_EXPERIMENTAL(a)    ((((u_int32_t) (a)) & 0xf0000000) == 0xf0000000)

#define    IN_LOOPBACKNET        127

#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
/* IPv6 address */
struct in6_addr
  {
    union
      {
    u_int8_t        u6_addr8[16];
    u_int16_t    u6_addr16[8];
    u_int32_t    u6_addr32[4];
      } in6_u;
#define s6_addr            in6_u.u6_addr8
#define s6_addr16        in6_u.u6_addr16
#define s6_addr32        in6_u.u6_addr32
#define s6_addr64        in6_u.u6_addr64
  };

#define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
#define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
#endif /* __MINGW32__ */


#if (defined _MSC_VER) || (defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF))
typedef unsigned short    sa_family_t;
#endif


#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)

#define    __SOCKADDR_COMMON(sa_prefix) \
  sa_family_t sa_prefix##family

/* Ditto, for IPv6.  */
struct sockaddr_in6
  {
    __SOCKADDR_COMMON (sin6_);
    u_int16_t sin6_port;        /* Transport layer port # */
    u_int32_t sin6_flowinfo;    /* IPv6 flow information */
    struct in6_addr sin6_addr;    /* IPv6 address */
  };

#define IN6_IS_ADDR_V4MAPPED(a) \
    ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
     (((u_int32_t *) (a))[2] == htonl (0xffff)))

#define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)

#define IN6_IS_ADDR_LINKLOCAL(a) \
    ((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))

#define IN6_IS_ADDR_LOOPBACK(a) \
    (((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \
     ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1))
#endif /* __MINGW32__ */

#define ip6_vfc   ip6_ctlun.ip6_un2_vfc
#define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim

#define nd_rd_type               nd_rd_hdr.icmp6_type
#define nd_rd_code               nd_rd_hdr.icmp6_code
#define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
#define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]

/*
 *    IPV6 extension headers
 */
#define IPPROTO_HOPOPTS        0    /* IPv6 hop-by-hop options    */
#define IPPROTO_IPV6        41  /* IPv6 header.  */
#define IPPROTO_ROUTING        43    /* IPv6 routing header        */
#define IPPROTO_FRAGMENT    44    /* IPv6 fragmentation header    */
#define IPPROTO_ESP        50    /* encapsulating security payload */
#define IPPROTO_AH        51    /* authentication header    */
#define IPPROTO_ICMPV6        58    /* ICMPv6            */
#define IPPROTO_NONE        59    /* IPv6 no next header        */
#define IPPROTO_DSTOPTS        60    /* IPv6 destination options    */
#define IPPROTO_PIM            103 /* Protocol Independent Multicast.  */

#define     IPV6_RTHDR_TYPE_0 0

/* Option types and related macros */
#define IP6OPT_PAD1        0x00    /* 00 0 00000 */
#define IP6OPT_PADN        0x01    /* 00 0 00001 */
#define IP6OPT_JUMBO        0xC2    /* 11 0 00010 = 194 */
#define IP6OPT_JUMBO_LEN    6
#define IP6OPT_ROUTER_ALERT    0x05    /* 00 0 00101 */

#define IP6OPT_RTALERT_LEN    4
#define IP6OPT_RTALERT_MLD    0    /* Datagram contains an MLD message */
#define IP6OPT_RTALERT_RSVP    1    /* Datagram contains an RSVP message */
#define IP6OPT_RTALERT_ACTNET    2     /* contains an Active Networks msg */
#define IP6OPT_MINLEN        2

#define IP6OPT_BINDING_UPDATE    0xc6    /* 11 0 00110 */
#define IP6OPT_BINDING_ACK    0x07    /* 00 0 00111 */
#define IP6OPT_BINDING_REQ    0x08    /* 00 0 01000 */
#define IP6OPT_HOME_ADDRESS    0xc9    /* 11 0 01001 */
#define IP6OPT_EID        0x8a    /* 10 0 01010 */

#define IP6OPT_TYPE(o)        ((o) & 0xC0)
#define IP6OPT_TYPE_SKIP    0x00
#define IP6OPT_TYPE_DISCARD    0x40
#define IP6OPT_TYPE_FORCEICMP    0x80
#define IP6OPT_TYPE_ICMP    0xC0

#define IP6OPT_MUTABLE        0x20


#if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
#ifndef EAI_ADDRFAMILY
struct addrinfo {
    int    ai_flags;    /* AI_PASSIVE, AI_CANONNAME */
    int    ai_family;    /* PF_xxx */
    int    ai_socktype;    /* SOCK_xxx */
    int    ai_protocol;    /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
    size_t    ai_addrlen;    /* length of ai_addr */
    char    *ai_canonname;    /* canonical name for hostname */
    struct sockaddr *ai_addr;    /* binary address */
    struct addrinfo *ai_next;    /* next structure in linked list */
};
#endif
#endif /* __MINGW32__ */
